Which answer choice is cos c?

 or  

The hypotenuse is the longest side of the triangle. The opposite side is the side length across from the point. The adjacent side is the side length next to the point.

At point C, the opposite side length is BA, the adjacent side length is BC, and the hypotenuse is AC.

cos C = A/H

cos C = BC/AC

cos C = 15/17      The first option is your answer

answer: 1) twenty-seven times y

              2) twenty-seven multiplied by y